Mercedes W205 Window Divider Splitter Separator Front Right O/S A2057300419

Mercedes W205 Window Divider Splitter Separator Front Right O/S is an original passenger-side window control system component, designed for installation in the front section of the vehicle body. Thanks to its factory origin from the Mercedes brand, it ensures proper guidance and operation of the window mechanism, which translates into stable, predictable window handling and correct interaction with other door components.

Specifications and technical data

• SKU: A2057300419
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057300419
• Substitutable numbers: A2057300419, A 205 730 04 19
• Location on the vehicle: Front, Right
• Category: Additional Glass & Window Parts

Purpose and function in the vehicle

The window divider in the W205 model is responsible for the proper guidance and operation of the window in the front right door. This component works in conjunction with the window regulator mechanism and seals, stabilizing the glass in the guides and ensuring it moves smoothly up and down. Its location in the front – right side zone makes it a part dedicated to a specific area of the body, which minimizes the risk of fitment issues.

Compatibility and fitment

The offered divider has been designed specifically for the door construction of the Mercedes C-Class W205 generation, allowing it to maintain factory geometry and mounting points. This means that after proper installation, the window maintains its correct position relative to the door frame, and the lifting mechanism operates in a predictable manner, without excessive stress or misalignment.

The original origin from the Mercedes brand helps maintain consistency with other window system components, which is especially important in vehicles equipped with advanced comfort systems and precise window-to-seal fitment.

Characteristics of the used component

The divider comes from the secondary market, which allows for cost-effective repair of the window system while maintaining the manufacturer's original design. A used component of this type is particularly attractive in situations where there has been mechanical damage to the door or window guides, and the vehicle owner wants to restore full functionality without resorting to replacements with uncertain fitment.

Choosing an original, used part allows you to reduce service costs while maintaining compliance with the factory technical solutions applied in the Mercedes W205.

Application in the window system

The front right window divider works in the immediate vicinity of the window regulator mechanism, seals, and door frame. Its proper operation influences:

• stable window guidance in the tracks,
• reduction of play and vibrations while driving,
• proper closing of the window against the seals,
• even load on the lifting mechanism.

Thanks to this, the window system maintains predictable operating parameters, and the user can enjoy the window opening and closing functions without interference.

Support with selection and installation

Before purchasing, it is worth verifying the compatibility of the part with the specific equipment version and production year of the vehicle to ensure a perfect fit for the passenger-side door. In case of doubt, it is helpful to compare the construction of the divider with the part currently installed in the car or consult a mechanic specializing in the Mercedes brand.

If you are planning a comprehensive repair or upgrade of the window area in your Mercedes and need other elements from the same group, such as guides, seals, or window regulators, check the available parts in the category Other car windows and window parts for Mercedes.

To better plan your vehicle service and make informed decisions about which window, body, or suspension system components should be replaced first, check out the practical tips in the article TOP 10 most frequently replaced parts in your car.

If you are considering a wider use of original components from dismantling in your Mercedes, you will find helpful information about the advantages of such a solution in the material Used parts for Mercedes – original parts from dismantling.